Home / 27,656.07-38,178.39-21,615.09

Finding the Fourth Proportional to 27,656.07, 38,178.39 and 21,615.09

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Solution

The fourth proportional to 27,656.07, 38,178.39 and 21,615.09 is: 29,839.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,656.07 : 38,178.39 = 21,615.09 : x
  2. Step 2: Convert to fraction form
    27,656.07/38,178.39 = 21,615.09/x
  3. Step 3: Cross multiply
    27,656.07x = 38,178.39 × 21,615.09
  4. Step 4: Simplify right side
    27,656.07x = 825,229,335.91
  5. Step 5: Solve for x
    x = 825,229,335.91/27,656.07
  6. Step 6: Final answer
    x = 29,839.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.